Michael j



I U G M6 M13 76 %M Patented Oct. 13, 1891.

.BENOH PLANE.

M. J. DUNN & W. H. MONTGOMERY.

(No Model.)

' UNITED STATES PATENT OFFICE.

MICHAEL J. DUNN AND l/VILLIAM H. MONTGOMERY, OF COLUMBUS, OHIO, ASSIGNORS TO THE OHIO TOOL COMPANY, OF SAME PLACE. Y

SPECIFICATION forming part of Letters Patent No. 461,166, dated October 13, 1891.

Application filed April 15, 1891. Serial No. 389,038. (No model.) I

T0 at whom it may concern.-

Be it known that we,MICHAEL J. DUNN and WILLIAM H. MONTGOMERY, citizens of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Bench-Planes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to mechanical appliances for effecting the up-and-downor longitudinal and the lateral or sidewise adjustments of a bench-plane bit; and it consists,

first, in a longitudinally-adjusting 1nechan-- ism comprising a pivoted lever-link and a screw-threaded link, the former being pivoted to the base or frog-plate of the plane and connected with the cap-iron of the bit, and the latter also connected to a bracket of said frog-plate and provided with a thumb-nut, as will be hereinafter described, whereby the adjustment back and forward on an inclined plane in a longitudinal direction can be'per fectly and readily effected, and, while this is the case, the parts for making such adjustment are readily accessible. T

Itconsists, second, in a novel combination of the bit, cap-plate, slotted frog-plate, and a leverhavingits lower end pivoted in the slotted upper end of the frog-plate and pivotally con nected at its lower end to the upper end of the bit. By this construction the lateral adjustment of the bit for the purpose of bringing its cutting-edge parallel with theface of the plane, and thereby securing an even out, is eifected, and as the lever is pivoted at nearly the eX- treme upper ends of the bit and frog-plate we are enabled to usefully two inches of the cutting-bit before substituting a .new one there for, and, while this is so, the lever is inconvenient location for being manipulated by the user of the plane.

In the drawings, Figure 1 is a vertical longitudinal section of a bench-plane with our invention illustrated thereon. Fig. 1 is a detail back view of the frog-plate. Fig. 2 is a top View of the bit and its cap-plate, and the lever for eifec'ting the lateral adjustment.

ened portion 6 which bears upon the top of.

said stock, while the front end of the frogplate abuts against the shoulder a at the front of the mortise of the plane-stock, as shown. This frog-plate is provided with a cavity 0, a short longitudinal rectangular slot 1), and a longlongitudinal slot Z), as shown in the drawings.

O is the plane-iron; D, the cap-plate thereof, and E a clamping-plate for holding the capplate D and bit 0 in position. The three plates.

0, D, and E are connected together by ascrew e, which passes through a key-hole-shaped passage j in the clamping-plate E, a round 7 hole gin the plate D, and a long slot h in the bit 0 and enters a screw-threaded socket 'L at the lower end of the frog-plate B. The capplate D and the bit 0 are connected to each other directly by means of a headed nicked screwj, the shank of said'screwbeing passed up through cap D and its end screwedinto said cap, While the head of the screwbinds against the under side of the bit Oand extends into the cavity 0 of the frog-plate B, as shown. The sloth of the bit is enlarged into a round hole h for the purpose of allowing the head ofthe screwj to pass through the bit O in the fitting together or separation of the cap-plate D and bit 0. At the upper end of the clamping-plate E a cam-lever F is pivoted for the purpose of causing a bind upon the cap and keeping its front edge parallel with the edge of the bit 0 or at right angles with the sides of the plane-stock A.

G is a jointed adjusting device consisting of a screw-threaded link G and a lever-link G pivoted in the Walls of theslot b of the frog I00 of the part G2 ofthe jointed adjusting device is extended in width or laterally and enters an oblong transverse slot m in the cap-plate D, the said oblong slot being of slightly greater area than the end of the said arm, so as to permit freedom of movement of the bit 0 and cap D in a lateral direction, and also allow the said arm slight movement in a direction longitudinally of the plates, and thus prevent binding and interference duringthe manipulation of the parts in making the necessary lateral and longitudinal adjustments of the bit 0. Thelower arm kof the said portion G2 is pivoted to the slightly-inclined screw-threaded link G, said screw-threaded link passing between the prongs of the bifureated bracket B of the frog-plateB andbeing confined therein, so as to act with a frictional bind against a too great descent after an adj ustment is made, by means of a collar 'n, and a milled button n, of a nut 71?, said nut fitting and receiving the screw-threaded portion of the said link G, and its collarnbearing on or occupying a position in close proximity tothe front side of the bracket, while. the button bears against or occupies a position close to the rear side thereof, and the frictional bearing action taking place when the gravity of the link G is unrestrained by the hand of the operator. The link G and its nut n are free,

to slide up and down upon the bifurcated right-angular position with the prongs of the bracket. By turning the. nutn, in one direction the. said adjusting device G is brought to. a straighter condition, and the arm m is forced forward and caused to move the bit 0 and cap-plate D on an inclined plane down ward and forward, and thereby effect the necessary or desired longitudinal adjustment, which adjustment can be made with the greatest nicety and with great convenience, as the links G and G are both supported by extensions or projections of the frog-plate, as

represented. a

H is a hand-lever with its handle bent upward slightly. The lower portion of this lever, between its extreme lower end and its rear upwardly-bent end, is parallel with the under side of the bit 0 and upper side of the frog-plate B and occupies a position between said plates. ver is turned upward, so as to-form a pivotal toep, and this toe passes up through a hole or 'slot inthe bit 0, said hole or slot being not far from the upper end of said bit-plate,

as shown. Just in rear of this too a pivotpin 19 is inserted and fastened to the lever, said pin working loosely in the longitudinal slot 1) of the frog-plate B, being held in said slot by means of a head formed on it, (the pivot,) as shown. the bit 0 can be adjusted laterally, it being simply necessary to move the handle end of the lever slightly to the right or left, as oocasion may require, in order to cause the toe p to force the upper end of the bit sufii ciently far sidewise to bring the lower edge of said bit parallel with the face of the plane: stock. The slot 5' in the frog B allows the pivot 10' to change its altitude accordingly as may be necessary when the bit 0 is adjusted up and down.

By our laterally-adj usting means described simplicity is secured and reduction of cost effected, and about two inches of the cut ting-bit can be utilized before-it is thrown tion at any point along the entire distance of the slot in the frog platea result not practicable unless the parts are constructed and arranged as we show. It is by this con.- struction that we are enabled to use the bit entirely up to the beginning of the slot. In our construction we use but one hole in the bit.

By means of the lever H We are aware of Patent No. $78,498; but

with such patented plane our invention could .not be employed, as said plane uses only a single bit, while our invention can only be used with a double or capped bit, and, besides this, a longer slot must be provided than is shown in Patent No. 37 8,494 to permit the bit to be used entirely up to the beginning of the slot, and shouldalonger slot be adopted in said patent the hole therein shown would have to be done away with," and this would combination with the frog-plate B, having bracket B,the bit 0, and cap-plate D, thewhole constructed and arranged substantially as described. The lower end of the leo 2. In a double or capped bit, in com-bination, a bit 0, cap D, clamp E, frog-plate B,

; and lever H, provided with the toe p,extendmg above its upper surface at its forward end, and the pivot-pin p nearly 'at its for ward end and extending downward from its lower surface, the said pivot-pin and toe of the lever being connected, respectively, with the frog-plate and the bit near their rear ends, and the said frog-plate being s10tted,'as at b, forward of said points of attachment of the lever, substantially as described.

I11 testimony whereof We afliX our signatures in presence of twovwitnesses.

MICHAEL J. DUNN. WILLIAM H. MONTGOMERY. Witnesses:

HERBERT E. BRADLEY, WILLIAM E. JONES. 

